Year 6 Circumference and Area of Circles Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 6 area & perimeter worksheet.
Success TutoringWorksheetsAnswer sheetYear 6 · Mathematics · Area & PerimeterYear 6 Circumference and Area of Circles Worksheet — Level 1 — Answers
Show your working. Use the π button on your calculator and round to 1 decimal place unless told otherwise.
1.A circle has a diameter of 18 cm. Find its circumference, correct to 1 decimal place.
Answer: 56.5 cm
- C = π × d = π × 18
- ≈ 56.5 cm
2.A circle has a radius of 8 cm. Find its circumference, correct to 1 decimal place.
Answer: 50.3 cm
- C = 2 × π × r = 2 × π × 8
- ≈ 50.3 cm
3.A circle has a diameter of 26 cm. Find its circumference, correct to 1 decimal place.
Answer: 81.7 cm
- C = π × d = π × 26
- ≈ 81.7 cm
4.A circle has a diameter of 8 cm. What is its radius?
Answer: 4 cm
The radius is half the diameter.
5.A circle has a radius of 19 cm. What is its diameter?
Answer: 38 cm
The diameter is twice the radius.
6.A circle has a radius of 20 cm. Find its area, correct to 1 decimal place.
Answer: 1256.6 cm2
- A = π × r2 = π × 202 = π × 400
- ≈ 1256.6 cm2
7.A circle has a diameter of 26 cm. What is its radius?
Answer: 13 cm
The radius is half the diameter.
8.A circle has a radius of 15 cm. Find its circumference, correct to 1 decimal place.
Answer: 94.2 cm
- C = 2 × π × r = 2 × π × 15
- ≈ 94.2 cm
9.A circle has a radius of 5 cm. Find its circumference, correct to 1 decimal place.
Answer: 31.4 cm
- C = 2 × π × r = 2 × π × 5
- ≈ 31.4 cm
10.A circle has a radius of 12 cm. Find its circumference, correct to 1 decimal place.
Answer: 75.4 cm
- C = 2 × π × r = 2 × π × 12
- ≈ 75.4 cm
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